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Diffstat (limited to 'binfilter/bf_basic/source/comp/buffer.cxx')
-rw-r--r-- | binfilter/bf_basic/source/comp/buffer.cxx | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/binfilter/bf_basic/source/comp/buffer.cxx b/binfilter/bf_basic/source/comp/buffer.cxx new file mode 100644 index 000000000000..7a2a65c845fb --- /dev/null +++ b/binfilter/bf_basic/source/comp/buffer.cxx @@ -0,0 +1,173 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#include "buffer.hxx" +#include <string.h> + +namespace binfilter { + +const static UINT32 UP_LIMIT=0xFFFFFF00L; + +// Der SbiBuffer wird in Inkrements von mindestens 16 Bytes erweitert. +// Dies ist notwendig, da viele Klassen von einer Pufferlaenge +// von x*16 Bytes ausgehen. + +SbiBuffer::SbiBuffer( SbiParser* p, short n ) +{ + pParser = p; + n = ( (n + 15 ) / 16 ) * 16; + if( !n ) n = 16; + pBuf = NULL; + pCur = NULL; + nInc = n; + nSize = + nOff = 0; +} + +SbiBuffer::~SbiBuffer() +{ + delete[] pBuf; +} + +// Rausreichen des Puffers +// Dies fuehrt zur Loeschung des Puffers! + +char* SbiBuffer::GetBuffer() +{ + char* p = pBuf; + pBuf = NULL; + pCur = NULL; + return p; +} + +// Test, ob der Puffer n Bytes aufnehmen kann. +// Im Zweifelsfall wird er vergroessert + +BOOL SbiBuffer::Check( USHORT n ) +{ + if( !n ) return TRUE; + if( ( static_cast<UINT32>( nOff )+ n ) > static_cast<UINT32>( nSize ) ) + { + if( nInc == 0 ) + return FALSE; + USHORT nn = 0; + while( nn < n ) nn = nn + nInc; + char* p; + if( ( static_cast<UINT32>( nSize ) + nn ) > UP_LIMIT ) p = NULL; + else p = new char [nSize + nn]; + if( !p ) + { +/*?*/ // pParser->Error( SbERR_PROG_TOO_LARGE ); + nInc = 0; + delete[] pBuf; pBuf = NULL; + return FALSE; + } + else + { + if( nSize ) memcpy( p, pBuf, nSize ); + delete[] pBuf; + pBuf = p; + pCur = pBuf + nOff; + nSize = nSize + nn; + } + } + return TRUE; +} + +BOOL SbiBuffer::operator +=( INT8 n ) +{ + if( Check( 1 ) ) + { + *pCur++ = (char) n; nOff++; return TRUE; + } else return FALSE; +} + +BOOL SbiBuffer::operator +=( UINT8 n ) +{ + if( Check( 1 ) ) + { + *pCur++ = (char) n; nOff++; return TRUE; + } else return FALSE; +} + +BOOL SbiBuffer::operator +=( INT16 n ) +{ + if( Check( 2 ) ) + { + *pCur++ = (char) ( n & 0xFF ); + *pCur++ = (char) ( n >> 8 ); + nOff += 2; return TRUE; + } else return FALSE; +} + +BOOL SbiBuffer::operator +=( UINT16 n ) +{ + if( Check( 2 ) ) + { + *pCur++ = (char) ( n & 0xFF ); + *pCur++ = (char) ( n >> 8 ); + nOff += 2; return TRUE; + } else return FALSE; +} + +BOOL SbiBuffer::operator +=( UINT32 n ) +{ + if( Check( 4 ) ) + { + UINT16 n1 = static_cast<UINT16>( n & 0xFFFF ); + UINT16 n2 = static_cast<UINT16>( n >> 16 ); + if ( operator +=( n1 ) && operator +=( n2 ) ) + return TRUE; + return TRUE; + } + return FALSE; +} + +BOOL SbiBuffer::operator +=( INT32 n ) +{ + return operator +=( (UINT32) n ); +} + + +BOOL SbiBuffer::operator +=( const String& n ) +{ + USHORT l = n.Len() + 1; + if( Check( l ) ) + { + ByteString aByteStr( n, gsl_getSystemTextEncoding() ); + memcpy( pCur, aByteStr.GetBuffer(), l ); + pCur += l; + nOff = nOff + l; + return TRUE; + } + else return FALSE; +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |